JPH0884874A - Feed mechanism for object to be sewn in sewing machine - Google Patents

Abstract

PURPOSE: To improve the quality of a product after sewing by preventing the generation of a wrinkle and a scar on each cloth after plural sheets of laminated cloth are sewn. CONSTITUTION: The object 44 to be sewn comprising the plural sheets of laminated surface cloth 45 and back cloth 46 is treated with a feeder 10 which performs an intermittent feed facing forward according to sewing, and a pair of first rollers 12 and a pair of second rollers 13 are provided in front of the feeder 10. A part 44b of the object 44 to be sewn is held between the outer peripheral faces of those first rollers 12 and second rollers 13, and the intermittent feed of the object 44 to be sewn in the forward direction of the feed direction of the feeder 10 can be performed by turning the first rollers 12 and the second rollers 13 intermittently in one direction. The turning size of each outer peripheral face of the first rollers 12 and that of the second rollers 13 when they are turned is set mutually differently.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a feeding mechanism for a sewing object in a sewing machine.

[0002]

2. Description of the Related Art Conventionally, there is a feed mechanism for a body to be sewn in the above sewing machine, which is constructed as follows.

That is, the body to be sewn is composed of a plurality of fabrics which are laid on top of each other, and as the body to be sewn is sewn by a sewing machine needle which repeatedly moves up and down, the body to be sewn is intermittently fed forward. A feeding body is provided.

Further, a pair of upper and lower rollers are provided in front of the feeding body, and a part of the body to be sewn in the front-rear direction is sandwiched between the outer peripheral surfaces of these rollers. The both rollers are adapted to intermittently repeat the rotations in which the respective outer peripheral surfaces have the same rotation size (the size of the arc along the outer peripheral surface, the same applies hereinafter). Is in the forward direction of the feeding body and is synchronized with the intermittent feeding of the feeding body. The work to be sewn is intermittently fed by the intermittent operation of the feed body and the rollers, and the sewn body is sequentially sewn at this timing.

A case where a sleeve of a jacket is molded by the sewing machine having the above structure will be described.

[0006] The sleeve is usually formed by attaching an outer ring-shaped fabric to an outer ring-shaped fabric and sewing them together. In the case of forming the sleeve, conventionally, first, an annular backing fabric is externally fitted to the inside outsided outer fabric and the annular backing fabric is overlaid on each other. This is a body to be sewn, and if the circumferential direction of the body to be sewn is matched with the front-rear direction and sewn, a sleeve in a state of being turned over can be obtained. Therefore, by turning this over, the above sleeve can be obtained.

[0007]

As described above, since the sleeve has a shape in which the ring-shaped outer fabric is fitted on the outer ring-shaped fabric, the total length of the outer fabric in the circumferential direction is larger than that of the inner fabric. Is longer than the total length in the circumferential direction.

Therefore, as described above, when the back cloth is fitted on the inside cloth which is turned upside down when the body to be sewn is to be sewn, the back cloth is given a tension to the whole, whereas The outer cloth will be slightly slackened at each part in its circumferential direction.

Therefore, the rollers sandwiching a part of the body to be sewn in the front-rear direction intermittently repeat the rotations in which the respective rotation dimensions of the outer peripheral surfaces are the same, thereby intermittently forming the body to be sewn. When it is fed, that is, when the front fabric and the back fabric by the above-mentioned rollers are fed in an intermittent manner in a state where the feed dimensions are the same, wrinkles are likely to occur on the front fabric among the front fabric and the back fabric connected to each other by the sewing. On the other hand, there is a problem that the back cloth is apt to be tight, which is not preferable in terms of product quality.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and after sewing a plurality of fabrics which are overlapped with each other, the fabrics are sewn without wrinkles or tightness. The purpose is to improve the quality of later products.

[0011]

[Means for Solving the Problems] The present invention for achieving the above object is as follows.

Incidentally, this "means for solving the problem"
In the section, the terms in parentheses below correspond to the terms in the claims.

The sewing machine feed mechanism in the sewing machine of the present invention has a plurality of surface cloths (fabric cloths) superposed on each other.
A sewn body 44 composed of 45 and a lining fabric (fabric) 46
Is provided with a feed body 10 that intermittently feeds forward as the body 44 to be sewn is sewn. A pair of a first roller (roller) 12 and a second roller (roller) 13 are provided in front of the feed body 10. And the first roller (roller) 12
A part 44b of the body 44 to be sewn is sandwiched between the outer peripheral surfaces 12a, 13a of the second roller (roller) 13 and the first roller (roller) 12 and the second roller (roller) 13 in one direction intermittently. When the body 44 to be sewn is intermittently fed in the forward direction of the feed body 10 by manual rotation, the first roller (roller) 12 and the second roller (roller) 13 are The rotating dimensions of the outer peripheral surfaces 12a and 13a when rotating intermittently are different from each other.

In the above-mentioned structure, even if each feed dimension by each rotation of the first roller (roller) 12 and the second roller (roller) 13 is made larger than each feed dimension of the intermittent feed by the feed body 10. Good.

The sewn body 44 is annular, and a part of the sewn body 44 in the circumferential direction is provided between the outer peripheral surfaces 12a and 13a of the first roller (roller) 12 and the second roller (roller) 13. When sandwiched, the first roller (roller) 1
2 and the second roller (roller) 13, the above-mentioned sewn body 4
The outer diameter of the first roller (roller) 12 located inside 4 may be smaller than the outer diameter of the second roller (roller) 13 located outside.

[0016]

[Operation] The operation of the above configuration is as follows.

In the "action" section, the terms in the following () correspond to the terms in the claims.

In FIG. 1, for example, in the case of forming a sleeve, first, an annular backing fabric (fabric) 46 is externally fitted to an inverted frontal fabric (fabric) 45, and is superposed on each other.
This is a sewn body 44.

By the way, the sleeve is an annular surface cloth (cloth).
Since 45 has a shape fitted onto an annular backing fabric (fabric) 46, the total length of the front fabric (fabric) 45 in the circumferential direction is
It is made longer than the entire length of the back cloth (cloth) 46 in the circumferential direction.

For this reason, when the body 44 to be sewn is to be sewn as described above, when the back cloth (cloth) 46 is externally fitted to the outer cloth (cloth) 45 which has been turned over, the back cloth (cloth) 46 is In contrast to this, tension is given to the entire surface, whereas the surface cloth (cloth) 45 becomes slightly slack at each part in the circumferential direction.

Therefore, when the member 44 to be sewn is to be sewn, a part 44b in the circumferential direction thereof is used as a first roller (roller).
12 and the outer peripheral surfaces 12a, 1 of the second roller (roller) 13
1 and FIG. 4 when sandwiching between the 3a and attempting to intermittently feed the sewn body 44 by intermittent rotation of the first roller (roller) 12 and the second roller (roller) 13. As indicated by the middle arrows E and H, the rotation dimensions of the outer peripheral surfaces 12a and 13a of the first roller (roller) 12 and the second roller (roller) 13 are different from each other. Specifically, the first roller (roller) 12 and the second roller
Among the rollers (rollers) 13, the rotation dimension of the outer peripheral surface 12a of the first roller (roller) 12 located inside the sewn body 44 is defined as the outer peripheral surface 13a of the second roller (roller) 13.
Larger than the rotation dimension of.

Then, of the front fabric (fabric) 45 and the back fabric (fabric) 46 of the body 44 to be sewn intermittently, the slack is more than the back fabric (fabric) 46 to which the tension is applied as described above. The feed dimension of the outer fabric (fabric) 45 that it has is increased, and tension is also given to this outer fabric (fabric) 45. Therefore, the front fabric (fabric) 45 and the back fabric (fabric)
Under the same conditions that both 46 are tensioned, they are sewn as indicated by I in FIG.

That is, according to the first aspect of the present invention, the first roller (roller) 12 and the second roller (roller) 13 are intermittently rotated so as to sandwich the sewn body 44 and intermittently feed it. At this time, the rotational dimensions of the outer peripheral surfaces 12a and 13a are different from each other.
Each of the fabrics in No. 4 can be sewn with tensions almost equal to each other.

In the above structure, even if each feed dimension by each rotation of the first roller (roller) 12 and the second roller (roller) 13 is made larger than each feed dimension of the intermittent feed by the feed body 10. Good.

In this way, the sewn body 44 is prevented from sagging between the feeding body 10 and the first roller (roller) 12 and the second roller (roller) 13, and The above-described action by reducing the influence of the intermittent feeding of the feeding body 10 and making the rotational dimensions of the first roller (roller) 12 and the second roller (roller) 13 different becomes more remarkable.

Further, the sewn body 44 has an annular shape, and a part of the sewn body 44 in the circumferential direction is provided between the outer peripheral surfaces 12a, 13a of the first roller (roller) 12 and the second roller (roller) 13. When sandwiched, the first roller (roller) 1
2 and the second roller (roller) 13, the above-mentioned sewn body 4
The outer diameter of the first roller (roller) 12 located inside 4 may be smaller than the outer diameter of the second roller (roller) 13 located outside.

By doing so, even when the inner diameter of the body to be sewn 44 is small, it is possible to sew without being disturbed by the first roller (roller) 12 located inside the body to be sewn 44.

[0028]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 4, reference numeral 1 is an industrial sewing machine, which is mounted on a sewing machine base 2. Further, for convenience of description, the direction of the arrow Fr in the drawing is the front, and the left and right described below are the horizontal directions toward the front.

The sewing machine 1 includes a table 4 fixed on the sewing machine base 2, a column 5 projecting upward from an end portion of the table 4 in one lateral direction, and a projecting end of the column 5. And an arm 6 projecting in the other direction to the left and right, from which an electric motor 7 as a drive source is housed.

A sewing machine needle 8 projects downward from the lower surface of the protruding end of the arm 6. The sewing machine needle 8 is adapted to reciprocate in the axial direction by the electric motor 7. Further, a presser foot 9 is provided corresponding to the tip of the sewing machine needle 8, and the presser foot 9 is also pivotally supported on the protruding end portion of the arm 6.

In particular, in FIG. 1, a feed body 10 is provided near the lower part of the presser 9, and the feed body 10 is supported by the table 4, and the feed body 10 is also operated by the electric motor 7. The operation of the feeding body 10 will be described. In a side view, the feeding body 10 first rises (arrow A in FIG. 1), then moves forward (arrow B in FIG. 1), and then, , Descends (arrow C in FIG. 1), then returns backward (arrow D in FIG. 1) and returns to the original position. Hereinafter, the above operation is repeated, and the movement is repeated along the locus along each side of the rectangular shape in a side view.

While the feeding body 10 is returning,
While the tip of the sewing machine needle 8 descends to the lowest end,
This decline is starting to rise.

1 to 4, a pair of rollers, a first roller 12 and a second roller, are provided near the front of the feeding body 10.
A roller 13 is provided. These first rollers 12
The axes of the second roller 13 extend in the left and right directions so as to be parallel to each other. The first roller 12 and the second roller 13 have supporting shafts 14 and 15 respectively fixed on the shaft centers thereof, and these supporting shafts 14 and 15 are a supporting member 16 supported by the table 4 or the arm 6. Each of them is rotatably supported around its axis.

A power transmission device 18 for interlocking the support shafts 14 and 15 with the electric motor 7 is provided. The power transmission device 18 is a first power transmission device fixed to the front surface of the column 5.
A power transmission mechanism 19 and a second power transmission mechanism 20 are provided.

The first power transmission mechanism 19 is the column 5
Has a casing 22 attached to the front surface thereof, and an input shaft 23 and an output shaft 24 project from the casing 22. Further, a power conversion mechanism is provided in the casing 22, which reduces the rotation in one direction input from the input shaft 23 and directs the output shaft 24 in one direction around its axis. Rotate intermittently.

The second power transmission mechanism 20 has a ratchet mechanism 26 and a gear type speed reduction mechanism 27 which are connected to each other, and an input shaft 28 is projectingly provided on the ratchet mechanism 26.
An output shaft 29 is projectingly provided on the gear type speed reducing mechanism 27. A rotating arm 31 is provided on the input shaft 28 of the second power transmission mechanism 20 so as to project therefrom. This rotating arm 31
Extend outward in the radial direction of the input shaft 28, and the rotary arm 31 has a long hole 3 along the longitudinal direction of the rotary arm 31.
2 is formed.

On the other hand, the input shaft 23 of the first power transmission mechanism 19 includes a main shaft 23b having the same shaft center as the rotary shaft center 23a of the input shaft 23, and an eccentric shaft 23c slightly eccentric to the main shaft 23b. ing. Link 3 to this eccentric shaft 23c
One end of the link 3 is supported, and the other end of the link 33 is connected to the rotary arm 31 by a screw means 34 so as to be relatively rotatable. Further, in this case, the other end of the link 33 can be connected to an arbitrary position in the longitudinal direction of the rotating arm 31 by operating the screw means 34.

A drive shaft 36 driven by the electric motor 7 is projectingly provided on the arm 6, and the input shaft 23 of the first power transmission mechanism 19 is connected to the drive shaft 36 by a first timing belt winding means 37. Has been done.

A supporting body 38 is attached to the table 4 or the arm 6, and an intermediate shaft 39 is rotatably supported on the supporting body 38 around the axis thereof. The supporting shaft 38 supports the first roller 12 on the intermediate shaft 39. The shaft 14 is connected by the second timing belt winding means 40. Further, the intermediate shaft 39 is connected to the output shaft 24 of the first power transmission mechanism 19 by the first universal joint shaft 41, and the second power transmission mechanism 2
No. 0 output shaft 29 has the second support shaft 15 of the second roller 13
They are connected by a universal joint shaft 42.

When the electric motor 7 is driven, the driving force is the driving shaft 36, the first timing belt winding means 37, the first power transmission mechanism 19, and the first universal joint shaft 4.
1, intermediate shaft 39, second timing belt winding means 40,
Then, it is transmitted to the first roller 12 through the support shaft 14 in sequence, and the first roller 12 is intermittently rotated in one direction (arrow E in FIGS. 1 and 4).

The driving force of the electric motor 7 is sequentially transmitted to the driving shaft 36, the first timing belt winding means 37, and the input shaft 23, and the eccentric shaft 23 of the input shaft 23 is transmitted.
c continuously rotates in one direction around the rotation axis 23a.
Then, in particular, as shown in FIG. 3, the link 33 is reciprocated in the axial direction thereof (arrow F in FIG. 3), and along with this,
The rotating arm 31 is swung around the input shaft 28 (arrow G in FIG. 3).

The driving force of the input shaft 28 that reciprocally rotates with the swing of the rotating arm 31 is the second power transmission mechanism 20.
It is transmitted to the second roller 13 through the second universal joint shaft 42 and the support shaft 15 in sequence, and the second roller 13 is intermittently rotated in one direction (arrows in FIGS. 1 and 4). H).

In the above case, the first roller 12 and the second roller 13 are simultaneously rotated in directions opposite to each other.

Reference numeral 4 in FIGS. 1, 5 and 6.
4 is a body to be sewn. The sewn body 44 is a ring-shaped outer cloth 4 which is a plurality of (two) cloths which are overlapped with each other.
5 and a back cloth 46, and the back cloth 46 is fitted onto the inside out cloth 45 which is turned upside down and overlapped with each other. The front cloth 45 and the back cloth 46 are sewn (see FIGS. 1, 5 and 6) and turn inside out to obtain the sleeve of the jacket.

The face cloth 45 turned upside down is the main body 47 of the surface cloth.
And a folded-back portion 48 which is folded back from the end of the front fabric body 47 toward the space between the front fabric body 47 and the back fabric 46.

When the body 44 to be sewn is sewn, the superposed portion of the front cloth body 47 of the front cloth 45 and the folded-back portion 48 and the back cloth 46 are superposed. The overlapped portions are between the presser 9 and the feeding body 10, and the outer peripheral surfaces 12a of the first roller 12 and the second roller 13,
Insert between 13a.

When the feed body 10 is actuated to move forward by the drive of the electric motor 7 (arrow B in FIG. 1), one of the sewn bodies 44 between the presser foot 9 and the feed body 10 is moved. The portion 44a is intermittently fed forward.

When the feeding body 10 returns, the feeding of the body to be sewn 44 is stopped, and during this time, the sewing machine needle 8 descends, and from this descending to an ascending, at this time, The folded-back portion 48 of the front fabric 45 and the back fabric 46 are sewn into the body to be sewn 44.

At the same time as the feeding body 10 moves forward to perform the intermittent feeding, the first roller 12 and the second roller 13 are intermittently rotated, and the outer peripheral surfaces 12a, 1 of these rollers are rotated.
A part 44b of the body 44 to be sewn between 3a is intermittently fed in the forward direction of the feed body 10.

In the above case, the outer peripheral surface 12 of each of the first roller 12 and the second roller 13 when they rotate intermittently.
The rotational dimensions of a and 13a are different from each other.

To explain this more specifically, the first
Each rotation size of the outer peripheral surface 12a of the roller 12 can be adjusted in length by adjusting the first power transmission mechanism 19.

The outer peripheral surface 13a of the second roller 13
As shown in FIG. 3, each of the rotating dimensions can be adjusted in length by changing the connecting position of the link 33 with respect to the rotating arm 31. That is, the stroke of the axial reciprocation of the link 33 is constant. Therefore, if the connecting position is changed to the free end side of the rotating arm 31, accordingly, the rotating dimensions of the outer peripheral surface 13a of the second roller 13 are shortened.

By the way, since the sleeve has a shape in which the annular front cloth 45 is fitted onto the annular back cloth 46, the total length of the front cloth 45 in the circumferential direction is larger than the total length of the back cloth 46 in the circumferential direction. Has also been long.

Therefore, when the body 44 to be sewn is to be sewn as described above, the front cloth 45 turned upside down and the back cloth 4 are
When 6 is externally fitted, the back cloth 46 is given a tension to the whole, while the front cloth 45 becomes slightly slack at each portion in the circumferential direction.

Therefore, when the member to be sewn 44 is to be sewn, a portion 44b in the circumferential direction thereof is formed on the first roller 12 and the second roller 12.
When sandwiching between the outer peripheral surfaces 12a, 13a of the roller 13 and intermittently rotating the first roller 12 and the second roller 13, the sewn body 44 is intermittently fed. Outer peripheral surface 12 of each rotation of the first roller 12 and the second roller 13 (arrows E and H in FIGS. 1 and 4)
The rotation dimensions of a and 13a are different from each other. Specifically, of the first roller 12 and the second roller 13, the rotation dimension of the outer peripheral surface 12a of the first roller 12 located inside the sewn body 44 is defined by the outer peripheral surface 13a of the second roller 13. Larger than the rotation dimension of.

Then, of the front cloth 45 and the back cloth 46 of the sewn body 44 which are intermittently fed, the front cloth 45 having a slack is fed than the back cloth 46 to which the tension is given as described above. As the size increases, tension is also given to the outer cloth 45. Therefore, the front cloth 45 and the back cloth 46 are sewn under the same condition that tension is applied (see FIG.
Medium code I).

As described above, when the rotating dimensions of the outer peripheral surfaces 12a, 13a of the first roller 12 and the second roller 13 are made different from each other, for example, the rotating time of each of the outer peripheral surfaces 12a, 13a is made the same, and the outer circumferences of the outer peripheral surfaces are made the same. The rotation speed of either one of the surfaces 12a and 13a may be increased.

Further, the rotational speeds of the outer peripheral surfaces 12a and 13a may be the same, and the rotational time of either one of them may be longer.

Further, in the above-mentioned structure, each feed dimension of the intermittent feed by the feed body 10, that is, the feed dimension by each rotation of the first roller 12 and the second roller 13, that is, the forward feed dimension of the feed body 10, that is, The average rotation size of each rotation size of each outer peripheral surface 12a, 13a is made larger.

Therefore, the sewn body 44 is provided between the feeding body 10 and the space between the first roller 12 and the second roller 13.
The slack is prevented from occurring, the influence of the intermittent feed of the feed body 10 is reduced, and the above-described action by making the rotational dimensions of the first roller 12 and the second roller 13 different can be obtained more significantly. Will be done.

When the average rotation dimension of each outer peripheral surface 12a, 13a is made larger than the forward movement dimension of the feed body 10,
For example, the forward movement time of the feed body 10 and the rotation time of the first roller 12 or the second roller 13 are set to be the same, and the first roller 12 or the first roller 12 or the second roller 13 is rotated faster than the forward movement speed of the feed body 10. The rotation speed of the two rollers 13 may be increased.

The forward speed of the feeding body 10 and the first
The rotation speed of the roller 12 or the second roller 13 may be the same as each other, and the rotation time of each of the first roller 12 and the second roller 13 may be longer than the forward movement time of the feeding body 10.

Of the first roller 12 and the second roller 13, the outer diameter of the first roller 12 located inside the sewn body 44 is about 1 / the outer diameter of the second roller 13 located outside.
It is made as small as 4.

Therefore, even when the inner diameter of the body to be sewn 44 is small, the sewing can be performed without being disturbed by the first roller 12 located inside the body to be sewn 44.

Although the above is based on the illustrated example, the electric motor 7
Alternatively, the drive shaft 36 may be driven by the timing belt winding means by the electric motor 7 instead of being built in the arm 6.

Further, the feeding body 10 may be operated by moving along a locus substantially along an ellipse in a side view. In this case, the dimensions of arrows A and C in FIG. The dimensions of arrows B and D correspond to the major axis of the ellipse.

[0068]

According to the present invention, there is provided a feeding body for intermittently feeding the sewn body composed of a plurality of fabrics which are overlapped with each other forward as the sewn body is sewn, A pair of rollers is provided in front of the feeding body, and a part of the body to be sewn is sandwiched between the outer peripheral surfaces of these rollers, and the feeding body is fed by intermittent rotation in one direction of each of the rollers. In the feeding mechanism for the sewing object in the sewing machine, which is configured to intermittently feed the sewing object in the forward direction and the forward direction, the rotation dimensions of the outer peripheral surfaces of the rollers when they rotate intermittently are Since the rollers are made different, the rotational dimensions of the outer peripheral surfaces of the rollers are made different from each other, so that the cloths in the article to be sewn can be sewn with tensions substantially equal to each other. Therefore, it is possible to prevent wrinkles and tightness from occurring in each fabric, which improves the quality of the product after sewing.

In the above structure, each feed dimension by each rotation of both rollers may be made larger than each feed dimension of the intermittent feed by the feed body.

In this way, it is possible to prevent the sewn body from sagging between the feeding body and the rollers.
The effect of reducing the influence of the intermittent feeding of the feed body and making the rotational dimensions of the both rollers different is
It becomes more noticeable and the quality of the product after sewing is further improved.

When the sewn body is annular and a part of the sewn body in the circumferential direction is sandwiched between the outer peripheral surfaces of the two rollers, the sewn body is positioned inside the sewn body. The outer diameter of the roller may be smaller than the outer diameter of the roller located outside.

By doing so, even when the inner diameter of the object to be sewn is small, it is possible to sew without being disturbed by the rollers located inside the object to be sewn.

Therefore, the work of sewing the body to be sewn can be carried out smoothly, and the degree of freedom of this work is improved.

[Brief description of drawings]

FIG. 1 is an enlarged view taken along line 1-1 of FIG.

FIG. 2 is an overall front view of the sewing machine.

FIG. 3 is a view taken along the line 3-3 of FIG.

FIG. 4 is a view taken along line 4-4 of FIG.

FIG. 5 is a partial perspective view of a body to be sewn.

FIG. 6 is a partial side sectional view of a body to be sewn.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sewing machine 7 Electric motor 8 Sewing needle 10 Feeder 12 First roller (roller) 13 Second roller (roller) 12a, 13a Outer peripheral surface 18 Power transmission device 31 Rotating arm 33 Link 34 Screw means 44 Sewing body 44b Part 45 Outer fabric (fabric) 46 Back fabric (fabric)

Claims (3)

[Claims] 1. A feed body for intermittently feeding a body to be sewn composed of a plurality of fabrics, which are laid on each other, forward as the body to be sewn is sewn, and in front of the body. A pair of rollers is provided, a part of the sewn body is sandwiched between the outer peripheral surfaces of both rollers, and the intermittent rotation of the rollers in one direction causes the feed body to move in the forward direction and the forward direction. In a sewing machine feeding mechanism for a sewing machine that intermittently feeds a sewing target, the rotation dimensions of the outer peripheral surfaces of the rollers when the rollers rotate intermittently are different from each other in the sewing machine. Sewing body feed mechanism. 2. The feed mechanism for a sewing object in a sewing machine according to claim 1, wherein each feed dimension by each rotation of both rollers is larger than each feed dimension of the intermittent feed by the feed body. 3. When the body to be sewn has an annular shape and a part of the body to be sewn in the circumferential direction is sandwiched between the outer peripheral surfaces of the rollers, the roller is located inside the body to be sewn. The feeding mechanism for a sewing object in the sewing machine according to claim 1 or 2, wherein the outer diameter of the roller is smaller than the outer diameter of the roller located outside.